2 x! t. u8 C Y H; [Theory is when you know everything but nothing works. 6 G5 u/ b# S1 a- ?( t( J5 s0 A* Q0 {/ ?# ~9 B; ]& w
Practice is everything works but no one knows why./ Z$ K0 a# D0 d; A+ T
% K$ ]" U* F# C( f这两天的情况是:Theory and practice are combined: nothing works and no one knows why.